Longines Calibres L 890, L 891, L 892, L 893 Technical Manual
Longines Calibres L 890, L 891, L 892, L 893 Technical Data — comprehensive technical documentation for eight automatic movement variants: L 890.1, L 890.2, L 891.1, L 891.2, L 892.1, L 892.2, L 893.1, and L 893.2. These 12-ligne round movements operate at 28,800 vibrations per hour with dual coaxial barrels. Technical specifications detail movement construction, gear train configuration, escapement design, balance wheel specifications, and rotor assembly. Comparison plates document the structural differences between movements with and without instantaneous date complications and quick-correction mechanisms. Reference document for watchmakers and technicians.
Documentation must be downloaded on a computer (PC, Mac, or Linux).
Do not use a smartphone or tablet to download documentation; they generally lack sufficient memory capacity to handle large files, and few users know how to locate the download folder on these devices.
Once downloaded, you can use it right away and even print the pages you need, or use your smartphone in photo mode to translate into the language of your choice: Google Translate
Document Details
- Format
- Pages
- 3
- Size
- 6.0 MB
- Category
- Watchmaking